Work is scheduled to begin Wednesday to put down bike lanes on a stretch of Hill Street, with work to follow starting June 23 on a segment of Grinstead Drive.

They are the next two roadways to get exclusive bike lanes in the city's continuing effort to make mobility easier for bikers. The new bike lanes will complete a doubling of bike facility mileage from 40 to 80 miles in the last 12 months, city officials noted.

Mayor Greg Fischer has included $300,000 for even more bike lanes in the budget he proposed for the fiscal year beginning July 1. "It's important for a growing city to have multiple transportation options, including walking, biking, buses and cars," Fischer said.

The impending work on Hill Street will feature bike lanes between Sixth and 17th streets. The project was discussed at two public meetings in the Park Hill community in April.

Existing parking restrictions on most of the corridor will be expanded to the entire stretch to allow for bike lanes in both directions that will be five feet wide and have single buffers on the motorist travel side.

Appropriate signage will be added to alert cyclists and motorists along the project route.

The Grinstead Drive project, described in two public meetings in April at the Peterson-Dumesnil House, will have lanes between Stilz Avenue and Lexington Road. Grinstead will be reduced from four motor-vehicle travel lanes to two, plus a center turning lane, through most of the corridor.

That will permit bike lanes on both sides between Peterson Avenue and Crescent Court. At Interstate 64, a single bike lane will go in alongside four existing motorist travel lanes.

The Grinstead bike lanes will not have buffer strips. Shared lane markings will be used to connect bicyclists from where the bike lanes end to the Beargrass Creek Trail that leads to downtown as well as Cherokee Park.

The diet — planned for portions of Breckinridge, Kentucky and Hill streets, as well as a section of Grinstead Drive — involves shaving a driving lane to make room for bike lanes.

There may be some minimal disruption to traffic while the work is in progress.

The city initially gave road "diets" — narrowing — on Brownsboro Road from Ewing Avenue to near Pope Street, two years ago, and on Grinstead between Cherokee Parkway and near Hilliard Avenue, last year. Both of those redesigns left the streets with one traffic lane in each direction and a center turning lane.

Just in the past few weeks bike lanes were put on segments of Kentucky and Breckinridge streets south of downtown.

The narrowing of the roadways has resulted in fewer accidents and traffic problems, said Rolf Eisinger, the bicycle and pedestrian program coordinator for the Metro Department of Public Works and Assets, who is overseeing the projects.

Reporter Sheldon S. Shafer can be reached at (502) 582-7089. Follow him on Twitter at @sheldonshafer.